US9631775B2 - Tap for a gas cylinder having a visual pressure indicator - Google Patents

Tap for a gas cylinder having a visual pressure indicator Download PDF

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Publication number
US9631775B2
US9631775B2 US14/379,340 US201314379340A US9631775B2 US 9631775 B2 US9631775 B2 US 9631775B2 US 201314379340 A US201314379340 A US 201314379340A US 9631775 B2 US9631775 B2 US 9631775B2
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United States
Prior art keywords
pressure
sliding member
piston
pressure indicator
filter
Prior art date
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Expired - Fee Related, expires
Application number
US14/379,340
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English (en)
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US20150034184A1 (en
Inventor
Jean-Claude Schmitz
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Luxembourg Patent Co SA
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Luxembourg Patent Co SA
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Assigned to LUXEMBOURG PATENT COMPANY S.A. reassignment LUXEMBOURG PATENT COMPANY S.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHMITZ, JEAN-CLAUDE
Publication of US20150034184A1 publication Critical patent/US20150034184A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/10—Means for indicating or recording, e.g. for remote indication mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/058—Size portable (<30 l)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0341—Filters
    • F17C2205/0344—Sinter type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0486—Indicating or measuring characterised by the location
    • F17C2250/0491—Parameters measured at or inside the vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • F17C2250/075—Action when predefined value is reached when full
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses
    • F17C2260/035—Dealing with losses of fluid
    • F17C2260/036—Avoiding leaks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/794—With means for separating solid material from the fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm

Definitions

  • the invention relates to a device for controlling flow and/or pressure of pressurized gas, the device being provided with a shut-off valve. More particularly, the invention relates to a device for controlling flow and/or pressure of pressurized gas, with a shut-off valve and an indicator of the presence of pressure downstream of the shut-off valve.
  • the patent document US2005/0229981A1 discloses a tap for a pressurized gas cylinder comprising a valve with a control wheel and a pressure gauge mounted in the wheel and the control shaft of the valve.
  • the pressure gauge is hydraulically downstream of the valve seat. It essentially comprises a sliding member with a piston housed in a cylinder, and a visual rotary member coupled to the sliding member.
  • One face of the piston is subjected to fluid pressure downstream of the valve.
  • the opposite face is subject to the resilient force of a spring.
  • a rod extending from the piston comprises helical tracks cooperating with a corresponding orifice of the rotary element display, so as to convert the sliding movement of the piston and the rod into a rotary movement of the visual rotary member.
  • the sliding member can take an infinite number of positions along the sliding stroke combined with defined angular positions, the latter corresponding to the angular positions of the visual rotary member.
  • This indicating device is in fact a pressure gauge aiming to replace conventional gauges including shows gauges. The latter are indeed subject to deterioration when subject to impacts, especially when the cylinder falls down, this deterioration can be a source of leakage and hence a source of danger especially for gas under very high pressure and of dangerous nature.
  • the pressure gauge of this teaching is also presented as being able to withstand pressures that are a multiple of its normal range of pressure. This pressure gauge is however of a somewhat complex design in particular in the mechanical connection between the rod and the visual rotary member as well as at the level of the guiding of the visual rotary member.
  • the patent document GB 888,182 A discloses a pressure gauge for screwing through a wall of a pipe, tank or other.
  • the pressure gauge operates on a similar principle to the previous document. However, it differs essentially in that the piston is not sealingly sliding in a cylinder, but actually comprises a corrugated flexible wall serving as sealing means and also of elastic means. It also differs in that the visual rotary element is supported by a ball bearing so as to ensure smooth operation without locking the indicator. This construction is therefore interesting from a reliability point of view however has disadvantages of implementation costs and bulk.
  • the invention provides a device for controlling the flow and/or pressure for pressurized gas overcoming at least one of the above mentioned disadvantages. More particularly, the invention provides a device for controlling flow and/or pressure of pressurized gas having a substantive level of safety and reliability, in particular for gases at more than 200 bar and/or hazardous gases, as for example hydrogen, and that at a reduced cost.
  • the invention relates to a device for controlling flow and/or pressure of pressurized gas, comprising: a body with a gas inlet, a gas outlet and a passage connecting the inlet to the outlet; a valve shutting-off the passage; a pressure indicator in the passage downstream of the shut-off valve, the indicator comprising a sliding member subjected to the fluid pressure and to an opposing resilient force, the sliding member comprising a first position in the absence of pressure; remarkable in that the pressure indicator is configured to comprise a single second position in the presence of a pressure range of from 5 bar, e.g., 20 bar, e.g., 50 bar, to the maximum working pressure of the device.
  • the pressure indicator only works in translation.
  • the device is a tap for a gas cylinder, with, in various implementations, a male thread at one end of the body corresponding to the gas inlet, the thread being designed to be screwed onto a gas cylinder.
  • the pressure indicator is configured so that the sliding member is free of rotational mechanical cooperation with another member during its sliding.
  • the pressure indicator comprises a body and the sliding member comprises a visual element hidden in the body in the first position of the body and emerging in the second position.
  • the visual element moves only in translation.
  • the visual element is generally cylindrical and is slidable in an open cavity of the body of the pressure indicator.
  • the visual element is rigidly attached to the remainder of the sliding member.
  • the pressure indicator comprises a transparent cap protecting the visual element, the cap being configured to allow observation of the visual element from a lateral position to the sliding axis of the pressure indicator, the lateral position forming an angle with the sliding axis of the sliding member greater than 30°, e.g., greater than 50°, e.g., greater than 80°.
  • the pressure indicator comprises a filter directly upstream of the sliding member.
  • the filter is rigid, e.g., of sintered metallic material, e.g., of a porosity between 5 and 30 ⁇ m, e.g., between 10 and 20 ⁇ m.
  • the pressure indicator comprises a specific body attached to the device body, the filter being housed in the specific body so that the pressure indicator forms an entity.
  • the sliding member comprises a piston, the filter section being equal to or greater than the section of the piston.
  • the sliding member comprises a piston and a visual element attached, e.g., by screwing, to the piston
  • the pressure indicator comprises a specific body with a through bore adapted to receiving the piston at one end of the bore, the visual element being then able to be attached to the piston at the other end of the bore.
  • the bore includes a first shoulder serving as a stop for the piston in the second position, and a second shoulder upstream of the first shoulder and of a larger diameter than the first shoulder, the second shoulder and the corresponding part of the bore receiving a filter.
  • the shut-off valve is manually operated, e.g., in rotation.
  • the shut-off valve may be a manual valve, pneumatic, electric, hydraulic or the like, or a pressure reducer providing a function of shut-off valve.
  • the measures of the invention provide a high level of security at a reduced cost. Indeed, the presence of only two stable positions of the pressure indicator makes it substantially simpler, cheaper and more reliable. These effects are particularly achieved by the absence of mechanical interaction, including in rotation, with another element such as a display element.
  • the fact that the visual element of the sliding member protrudes from the body of the pressure indicator allows a substantially easier reading, especially from a lateral position.
  • the presence of a filter permits to limit speed of travel of the sliding member during the opening of the valve, and thus also the mating of the shoulder surface of the piston of the sliding member and the impact noise. It also allows to further increase the reliability of the pressure indicator by preventing any jamming or locking of the sliding element by the presence of particles.
  • the construction of the indicator is particularly advantageous especially given the reduced number of parts, ease of assembly and the fact that it can be pre-assembled as an autonomous entity that it is enough then to screw or fix to the body of a tap or of any other flow and/or pressure control device of pressurized gas.
  • FIG. 1 is a longitudinal sectional view of a tap for a gas cylinder according to various embodiments of the invention, the tap being provided with an indicator of the presence of pressure.
  • FIG. 2 is a sectional view of the pressure indicator of the presence of pressure of the tap of FIG. 1 , in accordance with various embodiments of the invention, the indicator being in the retracted position corresponding to the absence of pressure.
  • FIG. 3 is a sectional view of the pressure indicator of the presence of pressure of the tap of FIG. 1 , in accordance with various embodiments of the invention, the indicator being in the deployed position corresponding to the presence of pressure.
  • FIG. 1 shows a control for controlling the flow and/or pressure of pressurized gas, more specifically, a tap 2 for a pressurized gas cylinder.
  • the tap 2 essentially comprises a body 4 with a gas inlet 8 at a lower part and a gas outlet 10 at an upper portion or mid-height of the tap 2 .
  • the body 4 also comprises a gas passage 6 connecting the inlet 8 to the outlet 10 .
  • the tap 2 comprises a valve shutting-off the passage, the valve comprising a seat 14 traversed by the passage 6 and a movable shutter 12 driven by a rotating device. The latter is controlled by a control wheel 16 disposed at an upper part of the tap 2 .
  • the body 4 also includes an auxiliary passage 19 providing a connection between the passage 6 downstream of the shut-off valve 12 , 14 and a pressure indicator 20 .
  • the pressure indicator 20 is disposed laterally to the tap body 4 .
  • FIG. 2 illustrates the pressure indicator 20 in greater detail.
  • This is a sectional view of the indicator 20 in the state corresponding to no pressure, or at least when the pressure in the passage 19 (see FIG. 1 ) is below a limit pressure.
  • the indicator 20 essentially comprises a specific body 22 intended to be attached, in particular screwed, to the tap body 2 .
  • the specific body 22 extends in a main direction corresponding to the direction of movement of a sliding member, comprising essentially a piston 26 , a rod 28 and a visual element 30 for indicating the presence of pressure downstream of the shut-off valve 12 , 14 ( FIG. 1 ).
  • the specific body 22 of the pressure indicator includes a through bore forming a first shoulder 40 to act as a stop for the piston 26 , a first cylindrical portion sealingly receiving the piston 26 by means of its seal 38 , a second shoulder 42 and a second cylindrical portion for housing a rigid filter 24 .
  • the second cylindrical portion is of a larger diameter than the first cylindrical portion.
  • the rod 28 connects the visual element 30 to the piston 26 .
  • the gas under pressure in the tap body 4 more specifically at the inlet of the pressure indicator (that is to say, on filter side), exerts a force on the piston 26 tending to move the sliding member to the right.
  • a spring 34 housed in the bore and supported on a third shoulder 44 exerts on the piston 26 an elastic force that is opposite to that of a gas under pressure.
  • the sliding member 26 , 28 and 30 In the absence of pressure or when the pressure is below a minimum value, such as 5, 20 or 50 bar, the sliding member 26 , 28 and 30 is maintained in a stable position corresponding to a position to the left in FIG. 2 and in which the visual element 30 is at least partially, e.g., mostly, e.g., completely, embedded in the specific body 22 so as not to be visible, at least laterally.
  • a minimum value such as 5, 20 or 50 bar
  • the visual element 30 is of a generally cylindrical shape and is slidably received in a corresponding open housing on the specific body 22 of the pressure indicator 20 .
  • a transparent cap 32 covers the visual element 30 and the part of the body 22 housing the visual element 30 .
  • the cap 31 presents a bell shape.
  • FIG. 3 one can observe the pressure indicator 20 in its second stable state corresponding to the presence of pressure and wherein the visual element 30 is at least partially out of the open housing of the specific body 22 and is well visible, even sideways.
  • the gas pressure on the piston 26 exerts on the piston 26 a greater force than that of the spring 34 opposite thereto.
  • the piston 26 is thus in abutment on the first shoulder 40 and the visual element 30 protrudes from the open housing of the specific body 22 of the indicator 20 . It is also visible through the cap 32 , particularly from a point of observation lateral to the longitudinal axis of the indicator 20 .
  • the visual element 30 is made of plastic material, e.g., a colored plastic material. In various implementations, the visual element 30 is connected to the rod 28 by a thread 36 .
  • the filter 24 disposed directly upstream of the piston 26 reduces the speed of movement of the piston 26 during the opening of the shut-off valve 12 , 14 .
  • the filter 24 is made of sintered material with a porosity of between 5 and 30 ⁇ m, e.g., between 10 and 20 ⁇ m. This helps to protect the mechanics of the pressure indicator 20 .
  • the pressure indicator 20 shown in FIGS. 2 and 3 is particularly easy to assemble, especially as an entity ready to be mounted on the valve body 4 .
  • the assembly consists essentially of inserting the sub-assembly of the piston and the rod 28 and 26 with the spring 34 in the bore of the body 22 . It is then sufficient to screw the visual element 30 on the rod 28 and then to introduce the filter 24 and place the cap 32 .
  • the cap 32 can however be secured directly to the body 4 of the tap 2 rather than to the specific body 22 of the pressure indicator 20 .
  • the different main elements of the pressure indicator 20 namely the body 22 , the piston 26 , the rod 28 and the spring 34 are, in various embodiments, made of metallic material.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Indication Of The Valve Opening Or Closing Status (AREA)
US14/379,340 2012-03-01 2013-02-28 Tap for a gas cylinder having a visual pressure indicator Expired - Fee Related US9631775B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
LU91948A LU91948B1 (fr) 2012-03-01 2012-03-01 Robinet pour bouteille de gaz avec indicateur visuel de pression
LU91948 2012-03-01
PCT/EP2013/053990 WO2013127895A1 (fr) 2012-03-01 2013-02-28 Robinet pour bouteille de gaz avec indicateur visuel de pression

Publications (2)

Publication Number Publication Date
US20150034184A1 US20150034184A1 (en) 2015-02-05
US9631775B2 true US9631775B2 (en) 2017-04-25

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US14/379,340 Expired - Fee Related US9631775B2 (en) 2012-03-01 2013-02-28 Tap for a gas cylinder having a visual pressure indicator

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US (1) US9631775B2 (fr)
EP (1) EP2820346A1 (fr)
LU (1) LU91948B1 (fr)
WO (1) WO2013127895A1 (fr)

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DE102014108848A1 (de) * 2014-06-25 2015-12-31 Construction Tools Gmbh Vorrichtung zur Drucküberwachung
AU2015385199B2 (en) * 2015-03-02 2019-02-21 Telefonaktiebolaget Lm Ericsson (Publ) A network node and a method therein for determining a mobility criterion
AU2015271926B1 (en) * 2015-06-02 2016-12-15 Neriki Valve Co., Ltd. Cylinder valve
FR3042586B1 (fr) * 2015-10-15 2018-03-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Bouteille de fluide sous pression
FR3054638B1 (fr) * 2016-07-26 2019-05-10 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Robinet et dispositif de fourniture de fluide sous pression
FR3095685B1 (fr) * 2019-05-03 2021-04-16 Air Liquide Récipient de fluide sous pression avec dispositif indicateur de pression
FR3098273B1 (fr) * 2019-07-05 2021-07-02 Air Liquide Bouteille de fluide sous pression

Citations (10)

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GB1187926A (en) 1968-03-01 1970-04-15 Samuel Jones & Co Engineering Improvements in Visual Indicators for Pressure-Filled Vessels.
US4203316A (en) * 1978-09-29 1980-05-20 Jones Medical Instrument Company Device and method for calibrating pulmonary function testing equipment
US4246797A (en) * 1979-12-03 1981-01-27 J. E. Myles, Inc. Pressure Indicator
US5014786A (en) 1989-03-10 1991-05-14 Nitto Kohku Co., Ltd. Pressure checker
US5189979A (en) 1992-04-01 1993-03-02 Popenoe Charles H Fluid pressure indicator
US6592827B1 (en) * 2000-10-24 2003-07-15 Univation Technologies Llc Sampling system for fluidized bed gas phase polymerization reaction systems
US20050016284A1 (en) 2001-09-07 2005-01-27 Ernst Bernhard Pressure indicator
US20050229981A1 (en) 2004-04-20 2005-10-20 Neils Frederiksen Flow control valve with device for indicating the status of a fluid, particularly for gas containers
WO2007128887A1 (fr) 2006-05-05 2007-11-15 Societe Des Usines Quiri & Cie (Societe Anonyme) Dispositif d'indication de la pression d'un circuit
US20110127350A1 (en) 2009-11-30 2011-06-02 Beisssel Wayne J Compression sprayer with pressure indicator

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Publication number Priority date Publication date Assignee Title
GB888182A (en) 1958-03-31 1962-01-31 Dewrance & Co Improvements in pressure gauges

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1187926A (en) 1968-03-01 1970-04-15 Samuel Jones & Co Engineering Improvements in Visual Indicators for Pressure-Filled Vessels.
US4203316A (en) * 1978-09-29 1980-05-20 Jones Medical Instrument Company Device and method for calibrating pulmonary function testing equipment
US4246797A (en) * 1979-12-03 1981-01-27 J. E. Myles, Inc. Pressure Indicator
US5014786A (en) 1989-03-10 1991-05-14 Nitto Kohku Co., Ltd. Pressure checker
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LU91948B1 (fr) 2013-09-02
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EP2820346A1 (fr) 2015-01-07

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